Malicious PDF — malware analysis report

Static analysis result for SHA-256 761a0c670214bb88…

MALICIOUS

PDF

88.4 KB Created: 2021-03-10 12:17:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4636f5005c6bc4266b5e96f0f31395a8 SHA-1: 2b7bce1bbba067e1195ca79c5c395a5bbf7d391d SHA-256: 761a0c670214bb88dfea25cae1cfa6f39b14a9d6952a2754491dd2a257810737
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://pelibifir.ru/wix?keyword=brother+xl+3100+sewing+machine+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412897/normal_602b4ce75106b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fed4fb7aa960.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382948/normal_6033721b71958.pdfIn PDF document text
    • http://eeuuurrrrr.space/what_is_a_good_quality_bluetooth_speakeriidf6.pdfIn PDF document text
    • http://natikolom.site/58621950655l9k9v.pdfIn PDF document text
    • https://cdn.sqhk.co/zavilisuga/bChbphM/b_tech_course_full_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401518/normal_5fd34d84c9fbb.pdfIn PDF document text
    • http://oneitshop.info/74269937838qs2g5.pdfIn PDF document text
    • http://bobiruropiles.22web.org/asus_atk_package_driver.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/jRgii8O/gallery_63_auction_tv_show.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_603585fd50ba5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452861/normal_6004ed47f3f16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382958/normal_6040be1f578fa.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/qRKiiDe/chess_board_table_sticker.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5460e25-8cbc-49bc-8144-c089bb0345f6/80357696541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d16cff6-3ad6-4660-b029-7d265e2780a8/lixidugomodaluvow.pdfIn PDF document text
    • http://rajamuviw.epizy.com/ardusi_information_in_gujarati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb806408-2bf1-458b-962c-734f23ba5609/lumuwatolarogivefodita.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CDE 5780 bytes
SHA-256: a61639100a985cea6af9622a13d1ceb507c64ceb183f16b66787703d5565376f
font_01_sfnt_off00013084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13084 10476 bytes
SHA-256: 311869fa0e14f32a0d52ae51fca99e632b2de0ce716cf81ff5c3f72b1ae5e3a4